Gauge for checking parts in cylindrical articles



Feb. 10, 1953 E. c. MOSS 2,627,664

GAUGE FOR CHECKINGHPARTS IN CYLINDRICALARTICLES Filed July 10, 1946 4 Sheets-Sheet 1 INVENTOR EC. MOSS A T TORNEY Feb. 10, 1953 I E. c. Moss 2,527,654

GAUGE' FOR cnscxmc PARTS IN CYLINDRICAL ARTICLES Filed July 10, 1946 4 Sheets-Sheet 2 FIG. 2

JNVEN TOR ECIMOSS A TTORNEV E. C. MOSS Feb. 10, 1953 GAUGE FOR CHECKING PARTS IN CYLINDRICAL ARTICLES Filed July 10, 1946 4 Sheets-Sheet 3 INVE/V TOR EC. MOSS ATTORNEY Patented Feb. 10, 1953 GAUGE FOR, CHECKING PARTS IN CYLINDRICAL ARTICLES Earl 0. Moss, Westfield, N. J assignor to Western Electric Company, Incorporated, New York, N. Y., a corporation of New York Application July 10, 1946, Serial No. 682,676

7 Claims.

the mounting of these parts within predetermined limits of given positions is important. When the common forms of gaging apparatus are not suitable for such purposes, the development of new forms of gages is essential.

An object of the invention is to provide a gage which is simple in structure and highly efficient for checking the position of an apertured part, secured to the inner periphery of a cylindrical article, with respect to a given position radially of the centerline of the article.

In the present embodiment of the invention, two species of the gage are illustrated. Each species includes an outer unit (near the periphcry of the article) for mounting in the aperture of the part which is secured to the inner periphry of a cylindrical article in alignment with an aperture in the article, and having an inwardly extending portion with an aperture therein positioned with its centerline identical with the centerline of the aperture in the part. A support is mounted within the article with its centerline coincident with the centerline of the article and an inner unit movably disposed on the support and including a gage bar which is movableradially of the support and article and receivable in the aperture of the said portion of the outer unit to indicate whether or not the aperture of the part is within predetermined limits of a given position radially of the centerline of the article.

In one of the species of the invention the outer unit mounted in the aperture of the part includes a projection, aportion of which is threaded to receive a washer-like member and" a threaded element to secure the unit in the aligned apertures of the-part and the article. One of the functions of this unit is to check the distance between a surface of an enlarged por. tion of the aperture and the periphery of the article or the outer edge of the opening therein. This is accomplished by a notch of a given depth and width in the outer portion of the threaded projection cooperating with an outer surface of the threaded element to indicate whether or not the said surface is within predetermined limits of the given position. 7

The other species of theinvention includes an annular member of theouter unit and cooperating gage elements mounted at spaced posi tions in a disk-like portion of the unit to indicate whether or not the centerline of the part iswithin given limits of the selected position This outer unit also gages thedistance of a surface of the part with respect to the periphery of the article. The inner units in each species are identical and perform similar functions.

Other objects and advantages will be apparent from the following detailed description when considered in conjunction with the accompanying drawings, wherein:

position in an article to Fig. 6 is a top plan view of the unit taken along the line 6-6 of Fig. 5;

Fig. '7 is an enlarged fragmentary sectional view taken along the line 1-1 of Fig. 6; and

Fig. 8 is an enlarged fragmentary sectional view taken along the line 88 of Fig. 6.

Referring now to the drawings, attention 'is first directed to Figs. 1 to 4, inclusive. In this embodiment of the invention, the locationv of. the centerline of an aperture ID in a part l.lmounted on the inner periphery of a cylindricalv article l2 with respect to the centerline of the article is one of the features to be checked by the gage. has an enlarged portion or recess l4, its centerline also being coincident with the centerline of the aperture l5 of the article l2. in this embodiment includes an outer unitindicated generally at I6 and including a body IT formed to be received in both portions of the aperture l0,'that is, the smaller portion of the aperture I 0 and the enlarged portion or recess M. A reduced threaded portion l8 of the body The aperture I 0 of the part. U-

The gage,

ll receives an annular element 20 with an enlarged central portion 2| receivable in the aperture I5 of the articleflZ. The annular element rests on the outer edge of the aperture l5 and through this structure it is possible to check the distance between the inner surface 22 in the aperture ill of the part and the'outer'edge of the aperture IE or periphery of the article. A threaded member or nut 24 is receivable on the threaded portion l8 and may be rotatably driven thereon manually a distance limited by the element 28 and the enlarged portion of the body I! .dis posed in the recess M. The outer surface 26 of the element 24 cooperates with a notch 21in a reduced portion 28 of the'body ll to indicate the results of the first gaging operation. If the surface 26 lies in a plane within the notch 21, the location of this portion of the part II, that is, the distance between the surface 22 and the periphery of the article, is satisfactory. The part H may be machined withinifine limits prior to the time it is mounted in the article, yet errors may occur during the process of mounting the part which might render it unsatisfactory. These conditions are checked "by the unit l6 during the first step of the'gaging process.

The next step of the gaging method includes checking the centerline of the aperture [0 to determine whether or not it is within predetermined limits of a given radial position with respect to the centerline of the article. This is accomplished through the aid of a support 30 in the form of a hollow shaft centrally mounted in the article through the aid of mounting heads 32, only one of which is shownin Fig. 2. An inner unit 33 has a U-shaped member "34 with a concaved inner surface 35 partially conforming tothe support 38, a notch 36 near'the center of the surface receiving a lug or projection 31 integral with the support to guide the carriage in its movement axially of the support. A gate 38 pivotally supported at 39 between projections of one leg of the member 34 serves in securing the 'inner'unit on the support. The gate 38 is removably held in place by a latch 40, the threaded shank of which is disposed in a threaded aperture of the lower leg of the member 34.

An integral sleeve M of the member 34 is centrally apertured at 42 perpendicular to the centerline of the support 30 and the article 12. A bar 43 slidably disposed in the "aperture '42 has a longitudinal groove 44 therein cooperating with a reduced portion 45 of a locking'screw 45 serving to hold the bar for axial movement only and .to lock the bar in any given position. The bar '43 is receivable in an aperture 48 of the body I! if the centerline of the aperture 4.0 is within ,predetermined limits of a given radial position with respect to the centerline of .thearticle. The bar 43 may be moved axially through the aid of a handle 48 mounted on the bar. The variations in the diameters of the bar and the aperture 45 will allow for the limitationsof the part, or the centerline thereof, withrespect to the said given radial position. Alongitudinal slot 50 is formed in the upper portion of the sleeve 4| :to receive the ,pin 48 so that the bar may be :lowered into the aperture -42 a distance sufiicient for .the .removal of'the bar from the aperture 45 of theupper'unit l6.

The gage shown in Figs. V1 to 4, inclusive, .is formed of separate units whichtmay be handled more easily than a unitary structure, the first gaging operation being simplified by the utilization of only the unit It. To perform the first gaging operation, the unit 33 with its bar 43 is positioned out of the way on the support or shaft 30. If desired, it may be turned about the shaft when moved out of registration with the lug 31 to give the'operator more room within the article to assemble the unit It. .The various portions of the unit l6 are separateandatthis time the body I! may be inserted in place within the apertures l0 and l 5 and held in this position while the element .20 .islowered over the threaded portion I8 "and positioned as illustrated in Fig. 3, the en larged central portion l'l extending into the aperture l5 of ithe article. The element 24 is then placed on the threaded portion I8 and rotated as far as possible, that is, until it is stopped by the element20 and the portion I! terminating their movement toward each other. At this time the operator observes the location of the surface 26 with respect to the notch 21. If the surface 28 lies within the area of the notch, the first requirement for thepart It has been met.

The unit 33 is then moved intoposition to cause the notch 36 to register with the projection 31 after which the carriage is moved axially of the shaft until the bar 43 is in general alignment with the aperture 46. The operator, through the aid of the handle Iii-moves the bar upwardly and if the bar is received in the aperture 46 the next requirement for the part ll has been met. Through these'tests, the operatorisassure'd that the surface 22 of the part 'I I iis'within given limits of are uired distance from the periphery of the article or the outer edge of the aperture I 5. The operator is also assured that the centerline of the aperture ill of the pa-rt'is'within predetermined limltsoffa given position radially of the centerline of the'article.

Thespecies shownin Figs. 5'to 8, inclusive, utilizes the inner unit '33. To simplify the descriptionof this species,the reference numerals identifying the variousportions of the inner unit 33 in Figs. 1 and 2 are employed'to'identify the same structure shown in Fig. 5. In this embodiment of the invention at another portion of the article 'lll, an'annular part 55 is mounted in the periphery ofthe article, that is, within an aperture therein. The relationship of the centerline of an opening'5l5 of the part 55 with respect to a given radial position in the article, as well as the position of a 'sur'face5'l, relative to the periphery of the article are the features of the part which are to be gaged. An outer unit 58 includes a body 59 centrally apertured at '60 to receive the bar 43. An annular member BI is disposed concentric with the body 59 and is loosely positioned thereon,held'against displacement by pins 63. A disklike portion 64 has equallyspaced apertures 65 therein to receive supporting elements 66, their head portions Bl being of like diameters and thicknesses. Interpo'sed between the apertures 55 and equally spaced therefrom, are bushings Til mounted in suitable apertures in the member 64. Gaging elements H are disposed'inthelr bushings "ill free to move axially distances limited bypins 72 extending laterally through the bushings and positioned within'notches '13 'of the gaging elements. The upper ends of the gaging elements are formed with high'portions'll an'd low portions l'frto cooperate withthe upper surfaces of their respective bushings 'toin'dicate the results 'o'f'the gaging process. A-knurled handle 18 extendin vertically'from the member 64 is used in moving the'llllili' 58 into and out of easing position. The head portions 51 f the supp rting elements 66 provide positive supports for the portion 64 on the annular member 6| when the unit 58 is not in gaging position to eliminate excess wear on the gaging elements i 1.

When gaging the part 55 to determine whether or not the surface 51 is within predetermined limits of a given distance from the periphery of the article it, the unit 58 without the assistance of the unit 33 is lowered until the element il rests upon the surface 51 and until the portion 6d comes to rest upon the periphery of the article, this portion being larger than the aperture or the part 55 so that it will be stopped by and rest on the periphery of the article. At this time the operator observes the gaging elements it which are free to move downwardly until they rest upon the upper surface of the element 5!. If the upper surfaces of the bushings i0 lie within the planes of the surfaces M or 15, or between these planes, the surface 57 is within given limits of the desired position from the periphery of the article.

During the next gaging operation, the unit 33 is moved into position, guided at this time by a lug 8i! entering the slot 35, where the bar 43 is u in general alignment with the aperture til in the body 59. At this time, through the aid of the handle 48, the operator moves the bar into the aperture 60 and secures it in position with the thumb screw The body 59 is, thereby, positioned with its centerline coincident with the given position desired for the centerline of the part 55. The variations of the centerline of the part from the said given position will be indicated by the gaging elements 1! The operator again observes the gaging elements "H and determines Whether or not any one or group of gaging elements are positioned out of limits. If, in order to position the bar 43 in the aperture 60,

it has been necessary to tilt the body a distance which would cause any of the gaging elements "H to be moved so that their gaging surfaces 14 or 35 would be respectively below or above the upper surfaces of their bushings Hi, the operator is assured that the centerline of the part is not within the required limits of a given position radially of the centerline of the article l5. However, if the gaging surfaces M and E5 of all of the elements ar within the required positions with respect to the surfaces of their bushings, although there may be variations in their respective positions, the operator is assured that the part 55 is located suiliciently accurate within the desired limits.

Although specific improvements of the invention have been shown and described, it will be understood that they are but illustrative and that various modifications may be made therein without departing from the scope and spirit of this invention as defined by the appended claims.

What is claimed is:

1. A gage for checking the position of an apertured part, secured to the periphery of a cylindrical article in alignment with an aperture in the article, with respect to a given position radially of the centerline of the article, the gage comprising a unit for mounting in the aperture of the part and having an inwardly extending portion with an aperture therein positioned with its centerline coincident with the centerline of the aperture in the part, a support mounted within the article with its centerline coincident with the centerline of the article, a carriage disposed on the support and having an aperture therein, the centerline of which is in the said given position, and a gage bar -partially projecting into the aperture of the carriage and movable longitudinally thereof where it will be receivable in the aperture of the said portion of the unit if the centerline of the aperture of the part is within predetermined limits of the given position.

2. A gage for checking the centerline of an apertured part with respect to a given radial posi tion in an article, circular in cross-section, in which the part is mounted and the distance of a surface of the part from the periphery of the article, the gage comprising an outer unit having a body with an aperture therein, a member disposed in engagement with the said surface of the part to cause the centerline of the aperture in the body to assume a position coincident with the centerline of the aperture of the part, and means cooperating with the member to indicate whether or not the said surface of the part is within a given distance from the periphery of the article, a support mounted within the article with its centerline coincident with the cen terline of the article, and an inner unit mounted on the support and having a bar movable in a given path radially of the centerline of the article to enter the aperture in the said body of the outer unit if the centerline of the part is within predetermined limits of a given radial position relative to the centerline of the article.

3. A gage for checking the centerline of an apertured part with respect to a given. radial position in an article, circular in cross-section, in which the part is mounted and the distance of a surface of the part from the periphery of the article, the gage comprising an outer unit having a body with an aperture therein, a member disposed in engagement with the said surface of the part to cause the centerline of the aperture in the body to assume a position co-incident with the centerline of the aperture of the part, means cooperating with the member to indicate whether or not the said surface of the part is within a given distance from the periphery of the article, a support mounted within the article with its centerline coincident with the centerline of the article, an inner unit mounted on the support and having a bar movable in a given path radially of the centerline of the article to enter the aperture in the said body of the outer unit if the centerline of the part is within predetermined limits of a given radial position relative to the centerline of the article, and means for use in moving the bar.

4. A gage for checking the centerline of an apertured part with respect to a given radial position in an article, circular in cross-section, in which the part is mounted and the distance of a surface of the part from the periphery of the article, the gage comprising an outer unit having a body with an aperture therein, a member disposed in engagement with the said surfaceof the part to cause the centerline of the aperture in the body to assume a position coincident with the centerline of the aperture of the part, means cooperating with the member to indicate whether or not the said surface of the part is within a given distance from the periphery of the article, a support mounted within the article with its centerline coincident with the centerline of the article, an inner unit mounted on the support and having a bar movable in a given path radially of the centering of the article to enter the aperture in the said body of the outer unit if the centerline of the part is within predeterminedlimitsof a igivenradiali position relative to the .centerline of the'articla'means foreuseiin moving the bar,"and means to lock the bar in any selected position.

5. A gage for checking the distance :of a sur face of an :aperturedxpart from the periphery of a cylindrical article in which the part is mounted adjacent an aligned aperture in the article, the gage comprising a body having a member to engage the saidsurface of the part and a projection having an indicating portion to extend through and beyond the apertures in the part and article a distance limited by the member engaging the said surface, a spacing element disposedconcentric with the projection and resting tangentially on the article, and a gaging .element movable on the projection a distance limited by the spacing element to cooperate with the indicating portion to indicate whether or not the said surface is'within predetermined limits of agiven distance from the periphery of the article.

6. Agage for checking the distance of a surface of a part from the periphery of a cylindrical article in which'the part is mounted adjacent an aligned aperture inthe article, the gage comprising a member positioned to rest on the part having parallelsides one of which lies on the said surface while the other is spaced a known distance therefrom, a, support positioned to rest upon the periphery of the article adjacent the member, a gaging element carried by the support and movable to engage the said other side of the member to indicate whether or not the said surface is within predetermined limits of a given distance from the-periphery of the article, and means to hold the support with its centerline in a given position radially of the centerline of the article, whereby thesaid gaging element will n1- dicate any variation of the centerline of the par: from the said given radial position.

7. A gage for checking the distance of a surface of apart from the periphery of a cylindrical article in which the part is mounted adjacent an aligned iaperturepf :the "article, the gage comprising :a member :positioned to rest on the part having parallel'sides one of which lies'on the said surface while the other is spaced a known distance therefrom, a support positioned to rest upon the periphery of the article adjacent the member and having'apertures therein, and gaging elements disposed in spaced positions in apertures of thesupport and movable to engage the said other side of the member to jointly indicate whether or not the said surface of the part is within predetermined limits of a given distance from the periphery of the article.

EARL C. MOSS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 785,739 Kettnich Mar. 28, 1905 199,533 Clark Sept. 12,1905 825,648 Haworth July 10, 1905 851,507 Fetherolf Apr. 20, 1907 945,515 Golding Jan. 4, 1910 1,472,195 Schlaupitz Oct. 30, 1923 1,526,418 Gronner Feb. 1'7, 1925 1,687,723 Goodsell Oct. 16, 1928 1,942,118 Pignone Jan. 2, 1934 2,124,603 Banett Jan. 26, 1938 2,224,728 Gulliksen Dec. 10, 1940 2,238,887 King Apr. 22, 1941 2,412,569 Dugger Dec. 17, 1946 2,565,140 Leustig Aug. 21, 1951 FOREIGN PATENTS Number Country Date 371,239 Italy May 16, 1939 OTHER REFERENCES American Machinist page 26, January 1, 1931; ibid., page 125, January 3, 1946; ibid., page 130, February 14, 1946. 

